Finding the Fourth Proportional to 78,777.88, 108,714.94 and 42,969.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,777.88 : 108,714.94 = 42,969.17 : x
2. Step 2: Convert to fraction form
   78,777.88/108,714.94 = 42,969.17/x
3. Step 3: Cross multiply
   78,777.88x = 108,714.94 × 42,969.17
4. Step 4: Simplify right side
   78,777.88x = 4,671,390,902.76
5. Step 5: Solve for x
   x = 4,671,390,902.76/78,777.88
6. Step 6: Final answer
   x = 59,298.26